c# - 带有 F# 的 Service Fabric 不工作

Question

我尝试将带有“Actor Service”的“Service Fabric Applicatoin”的默认模板从 C# 转换为 F#。

这是 github repo .

我可以编译所有内容，但是当我将它部署到本地集群时，我得到了 System.ArgumentNullException。有谁知道这里出了什么问题？

这是堆栈跟踪(抱歉，是德语):

bei System.Reflection.Emit.FieldBuilder..ctor(TypeBuilder typeBuilder, String fieldName, Type type, Type[] requiredCustomModifiers, Type[] optionalCustomModifiers, FieldAttributes attributes)
bei System.Reflection.Emit.TypeBuilder.DefineFieldNoLock(String fieldName, Type type, Type[] requiredCustomModifiers, Type[] optionalCustomModifiers, FieldAttributes attributes)
bei System.Reflection.Emit.TypeBuilder.DefineField(String fieldName, Type type, Type[] requiredCustomModifiers, Type[] optionalCustomModifiers, FieldAttributes attributes)
bei Microsoft.ServiceFabric.Services.Remoting.Builder.MethodBodyTypesBuilder.BuildRequestBodyType(ICodeBuilderNames codeBuilderNames, CodeBuilderContext context, MethodDescription methodDescription)
bei Microsoft.ServiceFabric.Services.Remoting.Builder.MethodBodyTypesBuilder.Build(ICodeBuilderNames codeBuilderNames, CodeBuilderContext context, MethodDescription methodDescription)
bei Microsoft.ServiceFabric.Services.Remoting.Builder.MethodBodyTypesBuilder.Build(InterfaceDescription interfaceDescription)
bei Microsoft.ServiceFabric.Services.Remoting.Builder.CodeBuilder.Microsoft.ServiceFabric.Services.Remoting.Builder.ICodeBuilder.GetOrBuildMethodBodyTypes(Type interfaceType)
bei Microsoft.ServiceFabric.Services.Remoting.Builder.MethodDispatcherBuilder`1.Build(InterfaceDescription interfaceDescription)
bei Microsoft.ServiceFabric.Services.Remoting.Builder.CodeBuilder.Microsoft.ServiceFabric.Services.Remoting.Builder.ICodeBuilder.GetOrBuilderMethodDispatcher(Type interfaceType)
bei Microsoft.ServiceFabric.Actors.Remoting.Builder.ActorCodeBuilder.GetOrCreateMethodDispatcher(Type actorInterfaceType)
bei Microsoft.ServiceFabric.Actors.Remoting.Runtime.ActorMethodDispatcherMap..ctor(ActorTypeInformation actorTypeInformation)
bei Microsoft.ServiceFabric.Actors.Runtime.ActorRuntime.<RegisterActorAsync>d__7`1.MoveNext()
---  Ende der Stapelüberwachung vom vorhergehenden Ort, an dem die Ausnahme ausgelöst wurde ---
bei System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
bei System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
bei System.Runtime.CompilerServices.TaskAwaiter.GetResult()
bei Program.main(String[] argv) in C:\Users\tomas\Projects\playground\MyServiceFabricApp\MyActor\Program.fs:Zeile 18.

Answer 1

你的问题很微妙。我自己偶然发现了这一点。

actor 接口(interface)中的每个参数都必须有一个显式 名称。感谢 Isaac Abraham 在他的 blog post 中提到了这一点(但是这个帖子已经很过时了)

从此改变你的 Actor 界面:

type IMyActor =
  inherit IActor
  abstract member GetCountAsync : unit -> Task<int>
  abstract member SetCountAsync : int -> Task

以下内容:(注意计数参数)

type IMyActor =
  inherit IActor
  abstract member GetCountAsync : unit -> Task<int>
  abstract member SetCountAsync : count: int -> Task

此更改后，您的示例对我来说效果很好。